package com.king.first.app.timer;

import com.king.first.bean.WaterSensor;
import com.king.first.utils.ContentUtils;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.streaming.api.datastream.KeyedStream;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.KeyedProcessFunction;
import org.apache.flink.util.Collector;

public class Flink_Process_Time_01 {

    public static void main(String[] args) {
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment().setParallelism(1);

        SingleOutputStreamOperator<WaterSensor> waterSensorStream = env.socketTextStream(ContentUtils.HOST, 9999).map(new MapFunction<String, WaterSensor>() {
            @Override
            public WaterSensor map(String value) throws Exception {
                String[] datas = value.split(",");
                return new WaterSensor(datas[0], Long.valueOf(datas[1]), Integer.valueOf(datas[2]));
            }
        });

        KeyedStream<WaterSensor, String> result = waterSensorStream.keyBy(value -> value.getId());

        SingleOutputStreamOperator<String> process = result.process(new KeyedProcessFunction<String, WaterSensor, String>() {
            @Override
            public void processElement(WaterSensor value, KeyedProcessFunction<String, WaterSensor, String>.Context ctx, Collector<String> out) throws Exception {
                long l = ctx.timerService().currentProcessingTime() + 5000;
                System.out.println("注册定时器：" + l);
                ctx.timerService().registerProcessingTimeTimer(ctx.timerService().currentProcessingTime() + 5000);
                out.collect(value.toString());
            }

            @Override
            public void onTimer(long timestamp, KeyedProcessFunction<String, WaterSensor, String>.OnTimerContext ctx, Collector<String> out) throws Exception {
                super.onTimer(timestamp, ctx, out);
                System.out.println("触发定时器：");
                long currentProcessingTime = ctx.timerService().currentProcessingTime();
                System.out.println(currentProcessingTime - timestamp);
                System.out.println(timestamp);
            }
        });


        try {
            env.execute();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
